It is old, its functionality has been superseded by NetworkManager, and worst of
all, it doesn't work:
Traceback (most recent call last):
File "/usr/bin/system-control-network", line 465, in ?
window = mainDialog()
File "/usr/bin/system-control-network", line 123, in __init__
self.hydrateProfiles()
File "/usr/bin/system-control-network", line 333, in hydrateProfiles
self.xml.get_widget('profileFrame').hide()
AttributeError: 'NoneType' object has no attribute 'hide'